The rove beetles are a family (Staphylinidae) of beetles, primarily distinguished by their short elytra that typically leave more than half of their abdominal segments exposed. With over 66,000 species in thousands of genera, the group is the largest family in the beetle order, and one of the largest families of organisms. It is an ancient group, with fossilized rove beetles known from the Triassic, 200 million years ago, and possibly even earlier if the genus Leehermania proves to be a member of this family. They are an ecologically and morphologically diverse group of beetles, and commonly encountered in terrestrial ecosystems.
In zoology, an inquiline is an animal that lives commensally in the nest, burrow, or dwelling place of an animal of another species. For example, some organisms, such as insects, may live in the homes of gophers or the garages of humans and feed on debris, fungi, roots, etc. The most widely distributed types of inquiline are those found in association with the nests of social insects, especially ants and termites – a single colony may support dozens of different inquiline species. The distinctions between parasites, social parasites, and inquilines are subtle, and many species may fulfill the criteria for more than one of these, as inquilines do exhibit many of the same characteristics as parasites. However, parasites are specifically not inquilines, because by definition they have a deleterious effect on the host species, while inquilines have not been confirmed to do so.
Termitomyces, the termite mushrooms, is a genus of basidiomycete fungi belonging to the family Lyophyllaceae. All of which are completely dependent on fungus-growing termites, the Macrotermitinae, to survive, and vice versa. They are the food source for these termites, who enjoy an obligate symbiosis with the genus similar to that between Atta ants and Attamyces mushrooms. Termitomyces mushrooms are edible, and are highly regarded for their flavor.
Coatonachthodes ovambolandicus is a termite-mimicking beetle which lives as a parasite in their nests. It looks roughly like a termite from above, though its legs look like "twisted balloons" rather than real insect legs. This less than accurate emulation can be explained by looking at the beetle from the side rather than down at its dorsum. The beetle's head and leg-bearing thorax are minuscule relative to its large abdomen. This part of the body is bent back towards the anterior (head) end, covering the rest of its body. It is the abdomen alone which is visible from above, providing a deceptive 'umbrella' that looks like a termite. The rear end thus acts as the termite 'head', and its appendages are composed of moving flaps attached to the abdomen's upper side.
Physogastrism or physogastry is a characteristic of certain arthropods, where the abdomen is greatly enlarged and membranous. The most common examples are the "queens" of certain species of eusocial insects such as termites, bees and ants, in which the abdomen swells in order to hold enlarged ovaries, thus increasing fecundity. This means that the queen has the ability to hold more and produce more eggs at one time. Physogastric queens produce an enormous number of eggs which can account for a significant amount of their body weight. In the termite species Macrotermes subhyalinus, eggs can make up a third of their body weight, and a 15-gram queen can produce up to 30 eggs per minute. The physogastric queens' egg production is supported by oocyte proteins supplied by the "queen body fat."
The Aleocharinae are one of the largest subfamilies of rove beetles, containing over 12,000 species. Previously subject to large-scale debate whether the subfamily deserved the familial status, it is now considered one of the largest subfamilies of rove beetles.
Termitotroginae is a monotypic subfamily of the family Scarabaeidae, the scarab beetles. The only genus in the subfamily is Termititrox. A second genus, Aphodiocopris, Arrow, 1920, has been synonymised with Termitotrox. All known members of this subfamily are tiny, blind and flightless, and are termitophiles, dwelling within the fungal gardens of colonies of species of termite in Africa or tropical Asia.
Termitotrox cupido is a species of scarab beetle in the subfamily Termitotroginae. It was first described by Munetoshi Maruyama in 2012, having been discovered living inside a nest of the termite Hypotermes makhamensis in Cambodia. It is a tiny, blind and flightless insect.
Hypotermes makhamensis is a species of termite in the subfamily Macrotermitinae of the family Termitidae. It lives in dry evergreen forests in tropical south-eastern Asia and builds termite mounds in which it cultivates fungus for use as food.
Dalotia coriaria, the greenhouse rove beetle, is a species of staphylinid rove beetle in the subfamily Aleocharinae. It is used as a predatory biological control agent for the management of pest insects.
Hoplopyga brasiliensis is a species of beetles of the family Scarabaeidae.
Many species of Staphylinidae have developed complex interspecies relationships with ants, known as myrmecophily. Rove beetles are among the most rich and diverse families of myrmecophilous beetles, with a wide variety of relationships with ants. Ant associations range from near free-living species which prey only on ants, to obligate inquilines of ants, which exhibit extreme morphological and chemical adaptations to the harsh environments of ant nests. Some species are fully integrated into the host colony, and are cleaned and fed by ants. Many of these, including species in tribe Clavigerini, are myrmecophagous, placating their hosts with glandular secretions while eating the brood.
Symphiles are insects or other organisms which live as welcome guests in the nest of a social insect by which they are fed and guarded. The relationship between the symphile and host may be symbiotic, inquiline or parasitic.
Aleodorus is a genus of rove beetles in the family Staphylinidae. There are at least four described species in Aleodorus.
Hoplandria lateralis is a species of rove beetle in the family Staphylinidae. It is found in Central America, North America, and South America.
Goniusa is a genus of rove beetles in the family Staphylinidae. There are at least three described species in Goniusa.
Microdonia is a genus of rove beetles in the family Staphylinidae. There are at least four described species in Microdonia.
Zyras artemis is a species of beetle in the family Staphylinidae and subgenus Diaulaconia described by Wei-Ren Liang, Munetoshi Maruyama, and Hou-Feng Li in 2017.
Austrospirachtha carrijoi is a species of rove beetle that is native to northern Australia. It has an enlarged abdomen that extends over its entire body and that appears remarkably like a termite, and uses that disguise to steal food from true termites.
Austrospirachtha is a genus of rove beetle in the tribe Corotocini.
